Update app.py

app.py

@@ -3,5 +3,13 @@ import gradio as gr
 def greet(name):
     return "Hello " + name + "!!"
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
+iface = gr.Interface(
+    fn=greet,
+    inputs="text",
+    outputs=gr.HighlightedText(
+        label="Diff",
+        combine_adjacent=True,
+        show_legend=True,
+        color_map={"+": "red", "-": "green"}),
+)
 iface.launch()